Improvement in speculums



A. BRADFORD. Speculums.

No. 206,162. "Patentgd July 23,1878.

WITNESSES J'NVENTOR I v (L'W QE ILPEIERS. mTO-LI'NOGRAPNER. WASHINGTON. B C.

UNITED STATES PATENT OEEIoE.

ADDISON BRADFORD, OF AMSTERDAM, NEW YORK.

IMPROVEMENT IN SPECULUMS.

Specification forming part of Letters Patent No. 206,162, dated July 23, 1879; application filed May 24, 1878.

To all whom it may concern: blades adjust at their outer end portions Be it known that I, ADDISON BRADFORD, equally with the adjustment at their inner exof Amsterdam, in the county of Montgomery tremities. The stem d of the rod-connecting and State of New York, have invented certain bar D is secured to the supportin -bar E, so new and useful Improvements in Speculums; as to have pivotal movement thereon. It and I do hereby declare the following to he passes through an opening formed in the ana full, clear, and exact description of the ingular arm H, which latter is rigidly secured vention, such as will enable others skilled in to the central portion of said bar E. A setthe art to which it pertains to make and use screw, h, passes through the free end of this it, reference being had to the accompanying angular arm, and has end bearings against drawings, which form part of this specificathe outer extremity of the stem d. By this tion. means the blade A may be angularly ad- My invention relates to that class of surjusted relative to blade A. gical instruments known as speculums. It is apparent that different changes may It consists in improved mechanism for adbe made in the detail construction of the justing the length of the blades, for varying speculum without departing from my inventheir angular relation toward each other, and tion. Thus the extension might be made at for moving one blade to or from the other at the middle or at the outer end of the blade, the outer extremities of the same while the instead of at the inner end; and instead of ngular relation of their bodies is undishaving the said extension slide within sleeves, u'bed. the reverse of this might be done, in which In the drawings, Figure 1 is a view, in perinstance the extension-body would be proactive, of a speculum made according to my vided with sleeves which would have moverntion. Fig. 2 is a side View of the same. ment over the main body of the blade. It is The bladesA and A are, respectively, made likewise apparent that instead of having h the rods a and a, whose.inner extremisleeves formed on the rods in either of these s are provided with sleeves b and b, in two instances, the said rods themselves may VlliCll the rods of the extensions B and B be made tubular in part or in whole, and of ave telescopic movement. Adjusting-rods 0 different diameter, so that the rods of one ad 0, which engage with said extensions, part of the blade may slide within the tubular :rtend rearward, and pass through openings rods of the other part of the blade So, too, rmed in the rod-connecting bars D and D instead of the set-screw h, a stud or pin might nd their stems cl and (1. These extensions be formed on stem cl, and pass through a low the length of either or both blades of plain slot in the free extremity of the arm H, :ie speculum to be adjusted, according to the this stud or pin being suitably screw-threaded different needs of the practice and by means to permit of the adjustment of a nut thereon, of said adjusting-rods such change in the whereby the bearing of said nut against the length of the blades can be made while the arm H will cause the desired angular adjustinstrument is introduced in use. ment of the blade A. It is not necessary that The stem (1 of the rod-connectin g bar D is this blade should pass through an opening in rigidly secured to the cross-rod G, which latsaid arm, as the latter may be made, without ter has perforated end bodies, which have the same, and the blade be pivoted to its supsliding movement upon the arms F of the porting-bar on the side thereof opposite to supporting-bar E. Clamping-screws g fasten that on which said arm is secured. this sliding cross-rod to the said arms when Having fully described my invention, what i at the desired position thereon. This means I claim as new, and desire to secure by Let of adjustment permits the blade A to be ters Patent, ismoved to or from its opposite blade A with- 1. The combination, with the series of rods out Varying the angular position of their a, forming blade A, and fastened at their outer bodies relative to each other, so that the extremities to connecting-bar D, of cross-rod (i, to which stem 41 is rigidly secured, and arms F, upon which said erossrod has sliding movement, substantially as set forth.

2. The combination, with rods (1 and conneeting-bar 1), formed with stem (l,ofer0ssrod G, having perforated end bodies, clampscrews g, and arms F, substantially as set forth.

3. The combination, with the series of rods a, forming blade A, and connecting-bar 1), formed with stem d, of the supporting-bar I), to which said stem is pivoted angular arm II, and suitable means for adjusting the stem relative to said arm, substantially as set forth.

4. The combination, with the series of rods a, forming blade A, and connecting-bar 1), formed with stem (1, which is secured by pivotal engagement to supporting-bar E, of

the angular arm II and adjusting-screw h, l

which latter passes through the free extremity of said arm, substantially as set forth.

5. The combination, with the series of rods a, forming blade A, and connecting-bar 1), provided with stem d, pivoted to supportingbar E, of the angular arm H, formed with an opening, through which said stem passes, and adjusting-screw 11, substantially as set forth.

6. In a speculum-blade formed with a series of rods fastened in a connecting crossbar at their outer extremities, the combination, with an adjustable extension-body, of a connecting-rod which extends rearward through an opening in said cross-bar and projects from out the stem of the same, substantially as set forth.

In testimony that have hereunto set my day of April, 1878.

ADDISON BRADFORD.

Witnesses:

N. .1. Dr. GRAFF, S. ll. Fnnxcn.

I claim the foregoing I hand and seal this 24th IL. s21 

